Instead eccentricity modulates the amplitude of the insolation maxima and minima that occur due to the precession cycle.

Strong support for the modulation of the precession cycle by eccentricity can be found in Aeolian dust deposits in the Eastern Mediterranean.

The modulating effect of eccentricity on the precession cycle has also been shown using a global fully coupled atmosphere-ocean-sea ice climate model.

The precession cycle is 93,000 Martian years (175,000 Earth years), much longer than on Earth.

Hence the full moon cycle can be defined such that the lunar precession cycle is the beat period of the full moon cycle and sidereal year.

A similar suggestion holds the 21,636-year precession cycles solely responsible.

It is possible that ice built up over several precession cycles, only melting after four or five such cycles.

Polaris is near the celestial pole for only a small fraction of the 25,700-year precession cycle.

Distinguishing rotations and days infers knowledge of the precession cycle.

If orbital precession cycles are identified, the dating error can be as low as 21,000 years.